1 files changed, 97 insertions, 0 deletions
diff --git a/httpserver/http-date.cc b/httpserver/http-date.cc
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+++ b/httpserver/http-date.cc
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+/*
+* This file is part of rasdaman community.
+*
+* Rasdaman community is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* Rasdaman community is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
+rasdaman GmbH.
+*
+* For more information please see <http://www.rasdaman.org>
+* or contact Peter Baumann via <baumann@rasdaman.com>.
+*/
+/*------------------------------------------------------------------------*/
+/*  http-support.c - get and set HTTP date strings.                       */
+/*                                                                        */
+/*------------------------------------------------------------------------*/
+/*
+ * RCS:
+ *   $RCSfile: http-date.c,v $ $Revision: 1.1 $ $State: Exp $
+ *   $Locker:  $ 
+ */
+
+
+#include   "defs.h"
+#include   "types.h"
+#include   "protos.h"
+#include   "server.h"
+#include   "http-defs.h"
+#include   "http.h"
+
+
+/****** http-date/HTTP_Date **************************************************
+*                                                                             
+*   NAME                                                                      
+*       HTTP_Date -- create a HTTP date string.                               
+*                                                                             
+*   SYNOPSIS                                                                  
+*       rc_t HTTP_Date( char *Buffer, size_t BuffSize );                      
+*                                                                             
+*   FUNCTION                                                                  
+*       Creates a date (and time) string as defined in the HTTP               
+*       specifications. It uses the `gmtime()' system function to get the     
+*       current time in Greenwich Mean Time and creates a date string with    
+*       the help of `strftime()'.                                             
+*                                                                             
+*   INPUTS                                                                    
+*       Buffer - a pointer to a buffer for the new string.                    
+*       BuffSize - size of the Buffer for the date string.                    
+*                                                                             
+*   RESULT                                                                    
+*       Returns the "OK" status code if it succesfully created the date       
+*       string, "ERROR" otherwise. The only reason for this function should   
+*       fail, is when the Buffer is not large enough.                         
+*       As a side effect, if the function succeeds, Buffer will contain the   
+*       current time and date in a format conforming to the HTTP              
+*       specifications.                                                       
+*                                                                             
+*   BUGS                                                                      
+*       Does not check if Buffer is NULL-pointer.                             
+*                                                                             
+*   SEE ALSO                                                                  
+*       RFC 2068: Hypertext Transfer Protocol -- HTTP/1.1                     
+*                                                                             
+******************************************************************************
+*
+*/
+
+rc_t HTTP_Date( char *Buffer, size_t BuffSize )
+{
+  time_t         systime;
+  time_t        *time_ptr;
+  struct tm     *tm_ptr;
+  size_t         strsize;
+
+  time_ptr = &systime;
+  time( time_ptr );
+
+  /* HTTP Date:  "wdy, dd mmm yyyy hh:mm:ss GMT"  */
+
+  tm_ptr = gmtime( time_ptr );
+  strsize = strftime( Buffer, BuffSize, "%a, %d %b %Y %H:%M:%S GMT", tm_ptr );
+  if( strsize == BuffSize )
+    return( ERROR );
+  else
+    return( OK );
+}
+